Pulley



(No Model.)

W. J. INNIS.

PULLEY.

' No. 285,816. Patented Oct. 2, 1883.

17071671257 Mam Wwmss g v UNITED STATES PATENT OFFICE.

I I \VILLIAM J INNIS, OF OIL CITY, PENNSYLVANIA;

PULLEY.

SPECIFICATION forming part of Letters Patent No. 285,816, dated October 2, 1883.

l I Application filed August18,1883. (Noinodeh) tions, showing modifications of a pulley 0011- structed in accordance with my invention.

My invention relates to bandpulleys; and the object of my invention is to construct them of paper or pasteboard disks, a wood or pasteboard rim, and a cast hub, united together, so that they shall be strong and also very light; and my invention consists in certain features of construction, hereinafter described, and specifically pointed out in the claims.

Similar letters refer to similar parts throughout the several views.

The hub A consists of a casting suitably bored to fit a shaft. Upon the periphery of the hub, and cast integral therewith, are one or two circular flanges, (1, having one'of their faces dressed radially to receive the inner edge or circumference of the eye of the disks B. These disks are made of one or more thicknesses of pasteboard or of paper, glued together and pressed between forms, or in such a manner as to take and retain a concave-convex or dished form; but their inner and outer edges are preferably set at right angles to the axis of the hub and'parallel to each other, to facilitate their attachment to the hub and to the rim of the Wheel.

The disks B are secured to the circular flanges a of the hub by means of clampingrings a and bolts or rivets b. After being thus secured, the rim 0 is secured to the disks outer edges. The rim is formed either of transverse laggings c, as shown in Figs. 1, 2, and 3, united together by means of nails or pins 0 passing in a tangential direction through one lagging and entering about halfway into the other, or of segments glued or ceived between the two disks of the pulley, to

which it can then be glued, or to conveniently receive nails or screws a, driven into the outer edges of said disks, to unite them securely to the rim.

In constructing pulleys I prefer to use two concavo-convex paper disks extending from the rim to the double-flanged hub, as shown in Fig. 1; but pulleys may also have their hub provided with a single central flange, and one of its paper disks, as shown at B in Fig. 3, may not extend to the hub thereof, but be riveted or glued, as at I), to the disk that extends from hub to rim.

Although I prefer to have the rim and disks of the pulleys constructed as shown in Figs. 1, 2, and 3, the form shown in Figs. 4 and 5 is also suitable for pulleys of small size.

I am aware that pulleys and wheels have been made with a central web formed of flat disks of paper, glued or otherwise united to-' gether and to the central portion of the rim, and that the metal rim of pulleys have been covered with two or more thicknesses of paper, and I do not claim pulleys constructed in this manner.

What I claim as my invention, and desire .to secure by Letters Patent, is-

1. Apulley constructed with a cast hub, pa

per disks made of one or more thicknesses,

and a wood rim.

2. A pulley having coneavo-convex paper disks, united together as described, in combination with a cast hub and a wood rim, substantially as and for thepurpose set forth.

3. A pulley having a concavo-convex paper disk extending from the hub to the rim,

and a second disk having its outer edge secured to the rim and its inner edge secured to the central web of the first disk, in combination with a cast hub and a rim, substantially as shown and described.

4. The combination of a cast hub, paper disks, constructed as shown and described, and a transversely convex rim of paper united to said paper disks, substantially as and for the purpose set forth.

In testimony whereof I affix my signaturein presence of two witnesses.

\VILLIAM J. INNIS. 'Witnesses:

O. W. Ross, GEORGE Ross. 

